What is an exhaust manifold?
The exhaust manifold is usually a series of steel pipes or a cast iron manifold assembly, depending on your engine and vehicle type. The exhaust manifold collects the burned exhaust gasses from the engine’s cylinders and ejects them via the tailpipe.
When should I replace the exhaust manifold on my car?
You’ll know it’s time to replace your exhaust manifold based on these signs:
Exhaust leaks: A cracked or damaged exhaust manifold will lead to exhaust leaks. You’ll notice an exhaust leak if you hear a hissing or clicking sound coming from the engine bay or from underneath the car.
Failed emissions test: Your vehicle will fail an emissions test if your exhaust manifold is damaged.
Check engine light: Your vehicle’s engine control unit (ECU) or powertrain control module (PCM) will illuminate the check engine light on your dashboard if your exhaust manifold is malfunctioning.
Lower performance: A bad exhaust manifold can reduce your engine’s power and lower your fuel economy.
Visible damage: Your exhaust manifold will show signs of physical damage, including cracks or corrosion.
Burned or overheating parts: Your vehicle’s surrounding components may be damaged if your damaged exhaust manifold is radiating excessive heat.
Age and mileage: Your exhaust manifold is exposed to high temperatures and rough conditions, so it’s bound to deteriorate over time. Routinely check your exhaust system for damage to your exhaust pipe, exhaust manifold, exhaust gas recirculation (EGR_ valve, and your exhaust gaskets.
How often should an exhaust manifold be replaced?
Exhaust manifolds do not have prescribed replacement intervals. In fact, proper maintenance can keep your exhaust manifold running smoothly throughout your engine’s lifetime.
In most cases, the older your vehicle and engine are, the more likely you’ll run into exhaust manifold issues. Routinely inspect your exhaust manifold and watch out for signs of deterioration to ensure it’s replaced if necessary.
Can I replace my exhaust manifold myself?
An exhaust manifold replacement requires the expertise and steady handling of a certified mechanic. Avoid changing your own exhaust manifold if you have limited car repair experience.
Your best option is to take your vehicle to a mechanic for a clean and correct exhaust manifold replacement.